Hello, I was using the default policy of creating new users like this : %g.%s@mydomain.com I detected That Capital letters remain : John.Doe@mydomain.com, so I decide to change the default policy : %rAa%rBb%rCc%rDd%rEe%rFf%rGg%rHh%rIi%rJj%rKk%rLl%rMm%rNn%rOo%rPp%rQq%rRr%rSs%rTt%rUu%rVv%rWw%rXx%rYy%rZz%g.%rAa%rBb%rCc%rDd%rEe%rFf%rGg%rHh%rIi%rJj%rKk%rLl%rMm%rNn%rOo%rPp%rQq%rRr%rSs%rTt%rUu%rVv%rWw%rXx%rYy%rZz%s@mydomain.com. for the new created users, everything is ok, but the already created user have always email addresses with capital letters. how to do to apply the default policy on theses users to have mail addresses without capital letters for all ? thank you for your helphatem

Use update-emailaddresspolicy to reapply the EAP. http://technet.microsoft.com/en-us/library/aa996869.aspx

Thanks for your help.hatem